Abstract: There is provided a fishing aid which includes a body, means on the body for attaching one end of a fishing line thereto, and a slot in the body into which the fishing line can be inserted. Within the slot is biased retention means for holding the line in the slot when no tension is on the line, and for releasing the line from the slot when the line tension tending to pull the line out of the slot exceeds a predetermined level. In a preferred form, the biased retention means may include a first and a second member, each movable within respective passageways which are oriented transversely to the slot, with springs or similar members urging the first and second members into positions blocking the slot.

Abstract: A fishing lure which is designed such that when attached to a fishing line, will emulate the random swimming motion of a swimming body, formed by an elongate lure body having a forward end and a trailing end, and having a substantially overall side to side arcuate configuration, the lure body being provided with a plurality of apertures disposed through the lure body, each of the apertures being provided with a flared scoop disposed along a portion of the circumferential periphery of the aperture, and each of the flared scoops facing in the general direction of the forward end of the lure body and being positioned askew with respect to each of the adjacent flared scoops such that none of the adjoining and adjacent flared scoops are in parallel alignment one with respect to the next.

Abstract: There is provided a valve grinding apparatus for centerless grinding of valves. Two base rollers with parallel axes are driven, and a control roller is centered above the base rollers. The control roller can be raised and lowered and the direction of its axis can be changed in order to cause the valve to be moved longitudinally in either direction. A support means is spaced from the base rollers and supports a different region of the valve stem.

Abstract: Well drilling apparatus including a powered drilling unit connectable to the upper end of a drill string and adapted to rotate it to drill a well, and a vertically extending guide track structure which guides the drilling unit for movement along the axis of the well, with a portion of the guide track structure being mounted for swinging movement between a drilling position in which the drilling unit is aligned with the axis of the well and a slightly inclined position in which the track structure guides the drilling unit for movement along an inclined axis in alignment with a mousehole, and with the drilling unit also preferably being mounted for movement to a laterally retracted position at a side of the well in which it leaves an area along the axis of the well unobstructed for use of conventional hoisting equipment in making a `round trip` of the drill string out of and then back into the well.

Abstract: In a positive feed power drill having a spindle drive gear train and a spindle feed gear train, and having hydraulic (air) means for actuating a piston to disengage the feed gear train for automatic retraction of the spindle, provision is made for field alteration of a valve in the hydraulic system, and associated actuating mechanism, to automatically reverse the positive feed when the spindle has been driven either (1) a predetermined extent set by a nut on the spindle which engages an arm over a valve stem and pushes the valve stem to a reversing position or (2) to a predetermined stop when countersinking, at which time the spindle stops advancing, thereby causing the spindle feed gear to have a tendency to move upwardly in the spindle actuator housing.

Abstract: A pair of levers are provided including corresponding first base ends and second jaw ends. A pivot fastener pivotally connects the base ends of the levers together for relative swinging of the levers between first open positions with the jaw ends displaced away from each other and second closed positions with the jaw ends displaced toward each other into at least closely adjacent positions. Spring structure is operatively connected between the levers yieldingly biasing the latter toward the second positions thereof and releasable latch structure is provided and is operative to releasably latch the levers in the first positions. An elongated rigid support member is also provided and includes a flattened end and a pointed tip end.

Abstract: A cutting attachment for a chain saw which substantially reduces the problems of kickback, lubrication and maintenance, is described. The attachment comprises a guide bar, a saw chain and a drive sprocket. The guide bar is smoothly and symmetrically convexly curved along both its longitudinal edges with a first radius of curvature and is provided with a nose portion with a second and smaller radius of curvature. The edge of each of the cutter and balancing links in contact with the bar is provided with two curved surfaces, one surface having a radius of curvature corresponding to the radius of curvature of the nose portion of the bar, and the other surface having a radius of curvature corresponding to the radius of curvature of the longitudinal edge of the bar. The height of the cutter links is chosen in relation to the length of the cutter to prevent rearing of the cutter links.

Abstract: A device for abrasive cleaning of blanks shaped as bodies of revolution is intended to be used in the shops of metallurgical and engineering works for rough grinding of external surface of blanks. The device comprises two wheelheads with rotating tools (7), a movable table (2), a headstock (3) and a footstock (4), carrying centers (5) for the blank, and a blank rotation drive (17). On the table (2) there are mounted a stand (13) and the footstock (4) interconnected by two guides (15) disposed in a vertical plane passing through the line of the centers (5). The headstock (3) is mounted on the guides (15) to be displaced along them.

Abstract: A surface grinding method in a first embodiment of which a workpiece supported on a surface (56) is rotated about a vertical axis while being translated along ways (46, 47) past a cutting head (22) comprising an abrasive belt (71) driven about a drum (72) to have a working edge (17) skewed with respect to the direction of the ways. In other embodiments the workpiece (100) is fed axially into the belt (106), which may be oscillated transversely to the direction of feed, and the workpiece may be moved, in the direction of the working edge, out of engagement with the belt while the belt and workpiece are in motion.

Abstract: Circular saw blades, especially for separating wood, cutting grooves into wood and the like materials, are disclosed. Such blades include a cutting zone in which there are arranged cutting teeth, which cutting teeth may be equipped with hard metal cutting plates. Next to the cutting zone there is arranged a carrying zone comprising a central receiving opening. The carrying zone is of approximately constant thickness and is provided at least in the region between the receiving opening and the cutting zone with raised portions. The raised portions are arranged to extend generally over the entire radial and circumferential extent of the carrying zone, substantially continuously in sequence to one another, and in respective opposite direction projecting above the pertaining larger side of the carrying zone. The projections can occupy respectively a section between radii located at an angle of from about 15.degree. to about 30.degree..

Abstract: A cylindrical grinding machine comprising chucks for supporting and rotating a workpiece about a selected axis, a wheelhead assembly selectively displaceable transverse to the axis including a rotatable grinding wheel for effecting stock removal from the surface of the rotating workpiece, a workrest assembly including a jaw having a workpiece engaging shoe, and means for selectively displacing the jaw for opposing the deflective force exerted by the grinding wheel on the rotating workpiece as it is machined, and means for monitoring the wear of the jaw including an indicator gauge mounted on the workrest jaw including a visually observable needle, a control arm pivotally secured to the workrest jaw having a first workpiece engaging end and a second end operatively associated with the indicator gauge, the control arm having a first position whereat the control arm first end leads the workrest shoe and a second position whereat the control arm first end is flush with the workrest shoe, and a spring for biasing

Abstract: A stationary or bench mounted belt sander is described constructed of a die cast bed or frame rotatably supporting a drive roll or pulley at one end thereof and provided at the other end portion thereof with generally longitudinal ways for slidably supporting a pair of generally parallel spaced apart outwardly extending generally elongated U-shaped stamped metal yoke or support bracket members provided at their inner or proximal end portions with camming surfaces. The distal ends of the yokes carry pins generally perpendicular thereto supporting a shaft for an idler roll or pulley.

Abstract: A belt grinding apparatus is provided for obtaining maximum wear from an abrasive belt. The apparatus is particularly useful in sharpening skate blades and the like and involves a motor-driven belt arrangement in which the belt is passed over an idler pulley for guidance diagonally across the working edge of a relatively fixed platen whereby a diagonal section of the running belt substantially wider than the width of the belt is presented for grinding action against a workpiece.A movable carriage clamp is provided to hold the skate blade in grinding position and move it in a straight line against the diagonally moving belt. The platen is mounted for adjustment to accommodate skate blades of different thicknesses.

Abstract: A portable hand tool, such as a drill, having an outer casing and a chuck adapted to receive a tool attachment is supported to facilitate handling of the tool. An apparatus for supporting the tool includes a base having an opening for receiving the tool attachment, a guide member spanning the base opening also including an opening for receiving the chuck, and an adjustable bushing for changing the size of the guide member opening for different size tools. Tracks are provided on the base for guiding movable brackets into engagement with the tool casing to support the tool. The brackets are secured in engagement with the tool casing by adjustable bands, and are secured in positions relative to the tracks by removable handles which are used to hold the apparatus.

Abstract: A percussive-action pneumatic tool comprising a handle-carrying frame having successively accommodated therein a shock-absorber and a housing with the percussion mechanism therein, connected through a gas distribution system to a compressed air source. The frame has a length sufficient for abutting against the surface of a material being worked and has a guide which receives the housing with the percussion mechanism. The shock-absorber includes a receptacle mounted on the frame and communicating via a controllable valve alternatively with the compressed air source and the atmosphere, a rod being mounted in this receptacle, adapted to act upon the housing with the percussion mechanism, to move the housing relatively to the frame as compressed air is supplied into the receptacle.

Abstract: A towel cutting machine includes a drive feed device including rollers for feeding strip material from a towel supply roll to and between a cutter blade and braking-sensing mechanism and into a set of driver pull slip-clutch rollers to pull the strip of material through the towel cutting machine, to hold the strip material taut during cutting and to draw off the towel severed from the end of the strip material after being cut.

Abstract: An apparatus for controlling the application of feed motion to a working member in a machine such as a honing machine including a working member mounted on a support structure or mandrel and movable thereon into engagement with the work surface, mechanism movable to advance the working member under pressure into engagement with the work surface, and other mechanism to predeterminately control and limit the feed motion, independent of pressure, the other mechanism comprising a dash pot assembly having relatively movable portions one of which is pivotally attached to the machine and the other of which is axially movable relative thereto, a spring normally biasing the portions of the dash pot assembly together into a predetermined inoperative condition, cooperatively engageable cam and cam follower members including mounting structure therefor operatively engageable with the other portion of the dash pot assembly, a link member operatively connecting the cam follower member to the feed up mechanism on the machin

Abstract: In a rotary drill having a driven rotary table with an axially directed passage through its center of rotation defined by a hollow spindle, a kelly bar, with annular shoulders, extending through the passage and a chuck mounted on the spindle, plungers are mounted for radial movement in the chuck, into and out of engagement with the annular shoulders on the kelly bar, and fingers are mounted to be moved hydraulically axially to engage the plungers and move them radially.

Abstract: An apparatus for grinding gears having an involute-shaped tooth flank profile, wherein there are accomplished between a dished or plate-shaped grinding wheel and the gear teeth to-and-fro generating movements as well as feed or advance movements in the tooth lengthwise direction, adjustment movements for compensating for the wear of the grinding wheel, and, finally, indexing movements. The grinding wheel is advanced between two respective indexing movements, independently of the magnitude of the adjustment needed for compensating for wear of the grinding wheel, by such an amount towards the tooth root that also such tooth root is ground.

Abstract: Self setting fish hook assembly. A spring has first and second extending arms, the spring being arranged to force the arms apart. First and second barbed hooks are mounted on the first and second arms. A latch spring is mounted on the first arm, the latch spring has a first extending member with a shallow hook portion at its end and a second extending member longer than the first extending member. The hook portion is arranged to hold the second arm in compressed position and adapted to release the second arm when the first and second arms are compressed by a fish biting on them. The second extending portion is arranged to snap the hook portion away from the arm being held when the first and second arms are compressed.